Postglacial matrix diffusion in a boulder sample

Kari Rasilainen, Juhani Suksi, K.-H. Hellmuth, Antero Lindberg, S. Kulmala

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)


A boulder sample was studied for its unusual U content. Analyses of U-series nuclides within the rock matrix perpendicular to an assumed fracture face show abrupt pulse-like concentration distributions with very low concentrations of U daughters. Both Th-230/U-234 and Pa-231/U-235 activity ratios are low, indicating recent U accumulation into the rock. Matrix diffusion is tested as a possible cause for the experimental observations. We assume that the diffusion process was triggered and controlled by rock expansion, strong mixing of different water types and rapid land uplift at the end phase of the last glaciation.
Original languageEnglish
Title of host publicationScientific Basis for Nuclear Management XIX
EditorsWilliam M. Murphy, Dieter A. Knecht
Place of PublicationPittsburgh
PublisherMaterials Research Society
ISBN (Print)978-1-55899-315-0
Publication statusPublished - 1996
MoE publication typeA4 Article in a conference publication
EventScientific Basis for Nuclear Management XIX - Boston, United States
Duration: 27 Nov 19951 Dec 1995

Publication series

SeriesMaterials Research Society Symposia Proceedings


ConferenceScientific Basis for Nuclear Management XIX
CountryUnited States

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